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Galois Trace


The Galois trace of P from L to K is the K-rational point

 Tr_(L/K)(P)=sum_(sigma in Gal(L/K))sigma(P).

Here L/K is a finite Galois extension, A is a commutative algebraic group defined over K, and P in A(L). For an elliptic curve, the sum is taken using the elliptic-curve group law.


See also

Elliptic Curve, Galois Conjugate, Galois Extension, Galois Group

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Cite this as:

Weisstein, Eric W. "Galois Trace." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/GaloisTrace.html

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